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Flow Coefficients
The flow coefficient Cv is a valve sizing designation commonly determined by laboratory test. It corresponds to the flow rate of water through a valve in US gallons per minute at 60 ̊F with a differential pressure drop of one psi.
Flow coefficients of various HiP valves
| Valve | CV |
| 15-11AF1 | 0.03 |
| 15-11AF2 | 0.05 |
| 10-11AF4 | 0.15 |
| 10-11AF6 | 0.15 |
| 20-11LF4 | 0.17 |
| 20-11LF6 | 0.45 |
| 20-11LF9 | 1.12 |
| 10-11LF12 | 3.65 |
| 20-11LF12 | 2.29 |
| 10-11LF16 | 5.91 |
| 20-11LF16 | 3.86 |
| 30-11HF2 | 0.04 |
| 30-11HF4 | 0.09 |
| 30-11HF6 | 0.15 |
| 30-11HF9 | 0.15 |
| 30-11HF16 | 2.29 |
| 40-11HF9 | 0.15 |
| 60-11HF2 | 0.04 |
| 60-11HF4 | 0.04 |
| 60-11HF6 | 0.04 |
| 60-11HF9 | 0.04 |
| 100-11XF4 | 0.04 |
| 150-11XF6 | 0.04 |
| 10-11NFA | 0.15 |
| 10-11NFB | 0.15 |
| 10-11NFC | 0.15 |
| 10-11NFD | 1.12 |
| 15F-11NFA | 0.45 |
| 15F-11NFB | 0.45 |
| 15F-11NFC | 1.12 |
| 15F-11NFD | 1.12 |
| 10F-11NFF | 5.91 |
| 10F-11NFH | 5.91 |
| Valve | CV |
| 15-12AF1 | 0.045 |
| 15-12AF2 | 0.075 |
| 10-12AF4 | 0.225 |
| 10-12AF6 | 0.225 |
| 20-12LF4 | 0.255 |
| 20-12LF6 | 0.675 |
| 20-12LF9 | 1.68 |
| 10-12LF12 | 5.475 |
| 20-12LF12 | 3.435 |
| 10-12LF16 | 8.865 |
| 20-12LF16 | 5.79 |
| 30-12HF2 | 0.06 |
| 30-12HF4 | 0.135 |
| 30-12HF6 | 0.225 |
| 30-12HF9 | 0.225 |
| 30-12HF16 | 3.435 |
| 40-12HF9 | 0.225 |
| 60-12HF2 | 0.06 |
| 60-12HF4 | 0.06 |
| 60-12HF6 | 0.06 |
| 60-12HF9 | 0.06 |
| 100-12XF4 | 0.06 |
| 150-12XF6 | 0.06 |
| 10-12NFA | 0.225 |
| 10-12NFB | 0.225 |
| 10-12NFC | 0.225 |
| 10-12NFD | 0.18 |
| 15F-12NFA | 0.675 |
| 15F-12NFB | 0.675 |
| 15F-12NFC | 1.68 |
| 15F-12NFD | 1.68 |
| 10F-12NFF | 8.865 |
| 10F-12NFH | 8.865 |
With the Cv coefficient known, the following values can be calculated:
